40543444 has 6 divisors (see below), whose sum is σ = 70951034. Its totient is φ = 20271720.

The previous prime is 40543441. The next prime is 40543471. The reversal of 40543444 is 44434504.

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 1855044 = 6220^2 + 1362^2 .

It is a super-2 number, since 2×40543444² = 3287541702762272, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40543441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067927 + ... + 5067934.

Almost surely, 2^40543444 is an apocalyptic number.

It is an amenable number.

40543444 is a deficient number, since it is larger than the sum of its proper divisors (30407590).

40543444 is a wasteful number, since it uses less digits than its factorization.

40543444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135865 (or 10135863 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 40543444 is about 6367.3733988200. The cubic root of 40543444 is about 343.5370213935.

Adding to 40543444 its reverse (44434504), we get a palindrome (84977948).

The spelling of 40543444 in words is "forty million, five hundred forty-three thousand, four hundred forty-four".